Shiny wing scales cause spec(tac)ular camouflage of the angled sunbeam butterfly, Curetis acuta

Bodo D. Wilts*, Primož Pirih, Kentaro Arikawa, Doekele G. Stavenga

*Bijbehorende auteur voor dit werk

    OnderzoeksoutputAcademicpeer review

    19 Citaten (Scopus)
    65 Downloads (Pure)


    The angled sunbeam butterfly, Curetis acuta (Lycaenidae), is a distinctly sexually dimorphic lycaenid butterfly from Asia. The dorsal wings of female and male butterflies have a similar pattern, with a large white area in the female and an orange area in the male, framed within brownblack margins. The ventral wings of both sexes are silvery white, which is caused by stacks of overlapping, non-pigmented, and specular-reflecting scales. With oblique illumination, the reflected light of the ventral wings is strongly polarized. We show that the silvery reflection facilitates camouflage in a shaded, foliaceous environment. The ecological function of the silvery reflection is presumably two-fold: for intraspecific signalling in flight, and for reducing predation risk at rest and during hibernation.(c) 2013 The Linnean Society of London, Biological Journal of the Linnean Society, 2013, 109, 279289.

    Originele taal-2English
    Pagina's (van-tot)279-289
    Aantal pagina's11
    TijdschriftBiological Journal of the Linnean Society
    Nummer van het tijdschrift2
    StatusPublished - jun.-2013

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